Shuttle-motion for looms.



PATENTED FEB. 26, 1907.

J. A. GENDRON. SHUTTLE MOTION FOR LOOMS.

APPLICATION FILED JULY 28, 1905.

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J. A. GBNDRON. SHUTTLE MOTION FOR LOOMSQ APPLICATION FILED JULYZB, 1905.

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PATENTED FEB. 26, 1907,

J. A. GENDRON.

SHUTTLE MOTION FOR LOOMS.

APPLIGATIONI'ILED JULY 28, 1905.

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v UNITED STATES PATENT orrien. JOSEPH A. GENDROFOF NASIEX, NEWHAMPSHIRE.

SHUTTLE-MOTION FOR LOOIVIS.

Specification of Letters Patent.

Patented Feb. 26, 1907.

To all w/wm it may concern:

Be it known that I, JosEPH A. GENnRoN, of Nashua, in the county ofHillsboro and State of-New Hampshire, have invented certainnew anduseful Improvements in Shuttle- Motions for Looms, of which thefollowing is a specification.

This invention relates to looms, and has particular reference to thattype in which the shuttle is given a positive movement on the lay, beingpushed partly across the lay between the warp-threads by one carriermechanism or shuttle-earn ing slide and drawn the balance of thedisliance by another carrier mechanism or shuttle-carrying slide, theshuttle being transferred-from one carrier to the other. In such loomsmeans are provided for. alternately opening and closing the jaws orfingers which are carried by the slides.

One of the objects of my invention is to provide simple connectionswhich will cause the shuttle-carrying slides to be reciprocated by themovement of the lay.

Another object of the invention is to provide a loom of this characterin which part of the necessary reciprocating movements of the shuttlewill be produced by movement of the shuttle-carriers themselves and therest of the movements of the shuttle produced by movements of theshuttle fingers to and from the carriers, all of these movements beingpositive.

Another object of the invention is to provide automatic means forcausing the shuttlegrasping jaws or fingers to close on the shuttlealternately.

Other objects of the invention are to sim plify various parts of a loomof this character, as will be pointed out hereinafter.

To these ends the invention consists in the construction and combinationof parts, substantially as hereinafter described and claimed. 4

Of the accompanying drawings, Figure 1 represents a plan view of asuflicient portion of a loom to illustrate my present invention. Fig. 2represents a front elevation thereof, partly broken away. Fig. 3 is aview similar to Fig. 1, showing some of the parts of the loom in adifferent position. Figs. 4 and 5 are detail elevations of thecam-operating device, enlarged, the actuatiLg-pawl bein shown indifferent positions. Fig. 6 is a detai end elevation, partly in section,of the parts in the position in which they are shown in Fig. 1. Fig. 7is a view similar to Fig. 6, but showing the parts in a difl'erentposition. Fig. 8 represents an enlarged detail elevation from the insideof the lay of a carrier and its adjacent parts. Fig. 9 represents avertical section through Fig. 8 looking to the right of said figure.Fig. 10 is a view similar to Fig. 8, showing the parts in a differentposition. Fig. 11 is a plan view, partly broken out, of the parts shownin Fig. 10. Fig. 12 is a detail plan view of the cam-plate whichactuates the shuttle-grasping fingers.

Similar reference characters indicate the same or similar partsthroughout the several views.

The frame 20, breast-beam 21, lay 22,

swords 23, pivoted at 24, the crank-shaft 25,

and the links 26 are represented as of ordinary construction and neednot be described in detail herein. Briefly stated, the rotation of thecrank-shaft oscillates the lay between the position represented in Figs.1 and 6 and the position represented in Figs. 3 and 7.

The lay 22 is formed with a way or channel 27, which is best shown inFigs. 8 and 9, the lay having, preferably, also top plates 28 to receivethe wear of the shuttle-carrier 29, which reciprocates thereon. An arm30, projectin downward from the carrier and having a ateral armextending out from the channel or way 27 ,is provided with cars 31 tosupport a pin 32. two parts being swiveled together, as shown in Fig. 1,is pivotally connected with the pin 32 and at the other end is pivotallyconnected with one end of an elbow-lever 34, pivoted at 35 to the breastbeam. The other arm of the elbow-lever is connected by a link 36 withthe pivot-bracket 37, secured to the lay 22. It will be understood by Atwo-part link 33, the

comparing igs. 1 and 3 that as the lay moves toward and from thebreast-beam the links 36 cause the elbow-levers 34 to swing, so as tooperate through the links 33 to slide the carriers toward and from eachother on the lay. The carriers simultaneously approach the mid-length ofthe lay and simultaneously retreat therefrom toward the ends, thesemotions of the carriers being obtained .solely by the movements of thelay. These movements of the carriers are positive, and the connectionsare such that the friction is very slight.

To grasp the shuttle alternately at its op posite ends and then releaseit, I provide each carrier with yielding extensions or fingers 38. Theseextensions or fingers are preferably formed by bending a strip ofresilient metal to aU shape, as indicated in Fig. 11, the bottom of theU being embraced by the forward ends of the side plates of. the

e hereinafter described. They are so formed as to have a normal tendencyto spring apart, as indicated at the right-hand endof the shuttle 39 inFig. 1. Each extension 38 is formed with an inwardly-projecting lug 40,(see Figs. 10 and 11,) and these ugs. project over and embrace inclinedtongues 41, projecting from the front edge of a plate 42, which ismounted so as to have a slight reciprocal movement relatively to theshuttle-fingers 38 and their lugs 40. Said plate 42 is formed with a lug43, to which is pivoted one end of a link 44, the other end beingpivotally connected with an arm 45, said arm 45 having a pin 46, whichprojects out through a slot 47, (see Figs. 2 and 11,) formed in one sideof the carrier. The members 44 and 45 practically constitute a jointedlink for actuating the plate 42, as hereinafter described. The shape ofthe plate 42 and its inclined tongues 41 is best indicated in Fig. 12.It will be-readily un derstood that by reciprocating the jointed link 4445, so as to slide the plate 42 back and forth, the inclined sides ofthe tongues 41 will cause the fingers 38 to approach each other andgrasp the shuttle 39 when said plate is moved forward, and when saidplate is retracted the tendency of the tongues 38 to spring apart, ashas been described, will cause said fingers to open and release theshuttle.

I shall now proceed to describe the mechanism for giving the two plates42 their necessary slight reciprocal movements above referred to. Areciprocating bar 48, having slots 49, mounted on guide-pins 50,projecting from the side of the lay 22, is formed with aoentraldepending arm 51, having a pin or roll 52, (see dotted lines inFig. 2,) said pin or roll being acted upon by a cam 68, which will behereinafter described. The two ends of the bar 48 are alike, and I shalldescribe the structure at one end. A tappet-arm 53 projects upward, anda lower arm 54 projects a short distance horizontally and carries a pin55, engaging a slot 56 in a lever 57, which is r cured to said shaft,said ed to be engaged 1 and 5,) pivoted to t designed simply to nient ofthe cam.

scribe, this cam during t movement which actuate t k or snapping I1'..OVactuate the levers given a step pivoted at 58 to the lay. A yieldingextension 59 of the lever 57 is pivoted to said lever 57 at 60 and isformed with an car 61, the under side of which is engaged by the freeend of a leaf-spring 62, which is secured to an ear 63 of the lever 57.This structure enables the extension 59 to yield in one direction, butnot in the other, because its ear 61 extends over the edge of the lever57. (See cam reans of an actu connected with th Figs. 1 and 2.) As shownat the left of Fig. 2, the upper end of the extension 59 18 shown d itsextension ved from their in doing so to moved 'it from gure the saidlever an are supposed other limit of aged the pin 46 and and end of itsslot 47 it is shown in said fi ement of the that end of the lay h causedto draw the fi contact with the sh the lever 57 at the the right in Fig.2)

0 have just mo as been advanced and 38 at that end in At the same timevn in Fig. 1 to ore when the I in Fig. 2 the 39 toward th position sho\position shown ake the shuttle moves from the that shown in As shownmost ole has another use that dinal slots 66 Short pins 67 proje stripwhich forns t base of the U tl vent tie fingers 3 rocating movementsrelati In other words, the pins de along the slots 66 an the pin 64 shin their horiz t e fingers 38 e cam 68, which d reciprocates th ontalplane.

ngages the pinor roll bar 48, is mounted through a bearing 0 swing onthe pivot e other end of the hereto a compound peripheral and, likethem, pivoted t or fulcrum rod 24. Th cam-shaft has secured t ratchethaving face-teet by a pawl 7 he strut 71. prevent retrograde presentlydese portions of its he bar 48 is given ement, so that it 57 smartly.The by-step movement ating-pawl 7 6, pivotally upper end of a plunger 5,(see Figs. 4

77, a suitable spring 78 being employed to cause the pawl 76 to engagethe face-teeth 72 of the compound ratchet, as represented in Fig; 7. The-means for actuating the plunger 77 I shall presently describe. In orderto prevent the upward movement of the pawl 76 from actuating thecam-shaft too far, the upper end of the plunger is provided with alaterally-extending pin 79 a which as the pawl reaches its upwardextreme of movement stands in the path of one of the peripheral teeth 73of the compound ratchet, so as to act as an abutment that will beengaged by such tooth to prevent excessive actuation of the cam-shaft.

The plunger 77 is mounted to reciprocate in bearings formed in brackets80, which proj ect from the strut 71, the lower bracket be ing formedwith a vertical slot 81, into which a pin 82 projects from the plunger77 to limit the vertical movements of the plunger by the length of saidslot. (See Figs. 2, 6, and 7.) Secured to the frame 20 are brackets 83,having secured to their outer ends strips comprising an inclined portion84 and an upright portion 85. The inclined portion forms a cam and theupright portion a stop, as will be presently described. Passing throughthe lower end of the plun er 7 7 is a pin 86, having freely mountedthereon trip-plates 87, which are adapted to engage the under side ofthe lower stationary bracket 80. These trip-plates 87 are so located asto oscillate between the brackets 83 and the cam and stop strips. Asshown, the said tripplates are pivotally mounted at one end on the pin86, and at the outer end of each trip- .plate is a pin or roller 88,which projects into the space between the cam 84 and the stop 85.

A spring 89, coiled about the plunger 77 and bearing at its lower end onthe upper surface of the lower bracket and at its upper end against astop-collar 90, secured on the plunger 77, has a normal tendency tothrow the plunger and its pawl 76 from the position shown in Fig. 7 tothe position shown in Fig. 6. With the parts in the position shown inFig. 7 the pin 86 and the point where the free ends of the triplatesbear against the under surface of the ower bracket 80 are in alinenient,so that said trip-plates serve to hold the plunger in its lowerposition; but when the lay moves toward the position shown in Fig. 6 therollers 88 engage the inner surface of the stops 85 and are heldthereby, while a slight further movement of the lay in the samedirection carries the pin 86 far enough to the left so that the tensionof the spring 89 will throw the plunger sharply upward, snapping thetrip-plates 87 to the position substantially as shown in Fig. 6. Thismovement gives the cam 68 a sudden quarter-n:ovement, enough to shiftthe bar 48 sharply in the manner and for the purpose hereinbeforedescribed. Upon the return 3 movement of the lay the two rollers 88engage the inclines 84 and are held thereby, so that continued moverrent of the lay in the same direction carries the pin 86 downward, theupper surfaces of the trip-plates 87 riding under the lower bracket 80and the rollers 88 riding down the inclines 84, thus lowering theplunger and compressing the spring 89 and bringing the parts again tothe position represented in Fig. 7 ready for a repetition of theoperation just described.

I shall now describe the means which provide for withdrawing the shuttle39 into either of the carriers 29. (See particularly Figs. 8, 9, 10, and11.) As has been de scribed, the pin 64 rides along the slots 66 in thecarrier, and said pin passes through the sides of the shuttle-graspingyoke. Pivotally connected with this same pin 64 is a link 91, having itsother end pivotally connected with an arm 92 of a rock-shaft 93, mountedin a bearing 94, formed in the side of the carrier. The outer end of therock-shaft 93 has secured thereto an arm 95, having a pin or roll 96 atits end, said pin or roll entering a slot 97, formed in a bracket 98,which is secured to the lay The arm 92 is provided with a lateral lug orprojection 99, which underlies a similar lug or projection 100, carriedby the arm 45 The slotted bracket 98 forms a guide which is followed bythe roll 96 of the rockshaft arm 95. hen the swinging movement of thelay causes the carriers to separate or move away from each other, theoperation of the device just described at each end of the lay is asfollows: As the carrier moves from the position shown in Fig. 10 towardthe position shown in Fig. 8 the roll 96, following the guide-slot 97,turns the arm 92 upward, and said arm through the link 91, which isconnected to the pin 64, draws the shuttle-grasping yoke or jaws intothe carrier, thereby increasing the movement of the shuttle to a greaterextent than would he imparted by the levers 34 and links 33 and 36alone. The first upward movement of the arm 92 causes its lug 99 toengage the lug 100 cf the arm 45, so that said arm 45 and the link 44double up simultaneously with the movements of the arm 92 and link 91.Otherwise the arm 45 and link 44 would oppose the movement of theshuttle-fingers into the carrier. It is to be borne in mind that the pin64, riding along the slots 66, aids in the movements just described. Onthe advance movement of the carrier the roller 96, riding up the curvedportion of the slot 97, causes the arm 92 to be thrown downward ortoward the left from Fig. 8, pushing on the link 91 and the pin 64, andthereby projecting the shuttle fingers or jaws from the carrier. Theplate 42 is moved forward by the movements of at the same time by theoperation of the bar 48 and its adjuncts, as above described, and thelink 44 and the arm 45 are at the same time drawn down to a horizontalplane, as represented in Fig. 10, owing to the connection of the link 44with said plate.

It is to be understood, of course, that the timing of the movements ofthe several parts is such that the operations of the dif ferentconnections will be in their proper order or relation to accomplish thefunction of carrying the shuttle outward from one carrier toward theopposite carrier, releasing it from one linger-carrying slide as thefingers of the other slide grasp it and the shuttle being then drawn tothe other end of the lay by the last-mentioned slide, the return of theshuttle being eil'ected in the same manner.

To prevent the shuttle from oscillating in a vertical plane when graspedand being moved by the fingers 38, the latter may be provided with lugsor flanges 101 to engage the upper and lower walls of the shuttle, andthereby steady it during its rapid movements on the lay.

In the operation of the loom the movements of the lay toward and fromthe breastbeam in the usual manner act, through the levers 34 and thelinks 33 and 36, to shift the sluittle-carriers toward and from themidle gth of the lay. The fingers or extensions 38 of theshuttle-carriers are alternately contracted b y the operation of theplates 42 in the manner hereiiibefore described, so that the shuttle ispassed from one carrier to the other. After either pair of fingers orextensions 38 has grasped the shuttle and the car rier is movedliackward the shuttle-grasping yoke, which comprises the fingers 38, iswithdrawn into the carrier, so as to give the shuttle a greater totallength of movement than would be imparted by the levers 34 and links 33and 36 alone, unless said levers and links were made of a great lengthBy employing the mechanism which withdraws the sl'1uttlegraspingfingersinto the shuttle-car rier I am enabled to employ shorter levers 34 andlink (lC'ili'lOiiilCflS with the lay than would OilllGlWVlSG berequired.

Having now described my invention, what I claim is l. Apositive-shuttie-motion loom carriers mounted upon the lay, connectionsbetween the lay and a stationary part of the loom whereby the carriersare reciprocated the lay, and means for withdrawing a shuttlealternately into the said-carriers and projecting it therefrom.

2. A positivc-sbrittle-motion loom having carriers mounted upon the lay,connections between the lay and a stationary part of the loom wherebythe carriers are reciprocated by the movements of the lay, said carriershaving automatically-operating jaws or finhaving i l l gers toalternately grasp and release the shuttle, and means for actuating saidfingers to cause them to alternately withdraw a shuttle into thecarriers and project it thererom.

3. In a loom of the character described, the combination with a carriermovable on the lay, of yielding extensions movable relatively to thecarrier and having their outer ends normally tending to open, and meansor automatically and positively closing said yielding extensions.

4. In a loom of the character described, the combination with the layand a carrier movable longitudinally thereof, of a U- shaped memberslidably mounted in the carrier and having its free ends adapted tograsp a shuttle, the sides of said U-shaped member being formed withinwardly-projecting lugs, a plate having beveled tongues engaging saidlugs, and means for reciprocating said plate relatively to the carrier.

5. In a loom of the character described, the combination with theglayand a carrier movable longitudinally thereof, of a U- shaped memberslidably mounted in the carrier and having its free ends adapted tograsp a shuttle, the sides of said Ushaped member being formed withinwardly-projecting lugs, a plate having beveled tongues engaging saidlugs, means for reciprocating said plate relatively to the carrier, andmeans for with drawing the said U-shaped member and a shuttle graspedthereby into the carrier.

In a loom of the character described, the combination with a carriermovable on the lay, and having a slot, a U-shaped member havingextensions adapted to grasp the shuttle, a plate movable relatively tosaid U- shapcd member and having connections with the sides thereof tocontract the latter, a jointed link connected with said late and havinga pin projecting through tlie slot of the carrier, and means foractuating said pr0- jecting pin lengthwise of the carrier.

7. In a loom of the character described, the combination with a barmounted on said lay, shuttle-grasping fingers actuated by said bar, acam for reciprocating the bar, and a pawl and means for actuating saidpawl to impart a quick movement to said cam.

8. In a loom of the character described, the combination with a barmounted to slide on the lay, levers connected with said bar to beoscillated thereby, means-for reciprocating the bar, andshuttle-controlling fingers having connections including pins located inthe path of movement of the said levers.

9. In a loom of the character described, the combination with a barmounted to slide on the lay, levers connected with said bar to beoscillated thereby, means for reciprocating the bar, andshuttle-controlling fingers having connections including pins located inthe path of movement of the said levers, the said ICIO levers beingjointed and having their outer parts yielding substantially as and forthe purpose set forth.

10. In a loom of the character described, the combination with the layand shuttlegrasping fingers thereon, of a bar mounted on the lay andhaving connections for controlling the shuttle-grasping fingers, a camfor reciprocating said bar, a ratchet connected to the shaft of saidcam, a pawl for actuating the ratchet, and means for suddenly actuatingthe pawl.

11. In a 100111 of the character described, the combination with the layand shuttlegrasping fingers thereon, of a bar mounted on the lay andhaving connections for controlling the shuttle-grasping fingers, a camfor reciprocating said bar, a compound ratchet carried by the shaft ofsaid cam, a pawl for engaging one set of teeth of the ratchet, said pawlhaving a stop adapted to be interposed in the path of movement of theother set of l teeth of the ratchet, and means for reciprocating saidpawl.

12. In a loom of the character described, the combination with the lay,of a shaft mounted thereon, said shaft having a cam at one end and aratchet at the other end, shuttle-grasping fingers on the lay, meanscontrolled by said cam for actuating the shuttlegrasping fingers, aplunger mounted in bearings connected with the lay and having a pawl toengage said ratchet, trip-plates connected with the plunger and adaptedto actuate the same in one direction, a spring for actuating the plungerin the other direction, and means for oscillating the trip-platesaccording to movements of the lay.

13. I11 a loom of the character described, the combination with the lay,of carriers movable longitudinally thereof, shuttlegrasping fingersmounted in said carriers, jointed links for retractng and projectingsaid fingers relatively to the carriers and means for actuating saidarms.

14. In a loom of the character described, the'combination with bracketssecured to the lay said brackets having curved slots, of carriersmovable on the lay, each carrier having a rock-shaft provided with anarm engaging a curved slot, said rock-shaft having also a jointed link,and shuttle-grasping fingers connected with said jointed link, wherebymovements of the carrier on the lay will automatically move theshuttle-fingers relatively to the carriers.

In testimony whereof I have affixed my signature in presence of twowitnesses.

JOSEPH A. GENDRON. Witnesses:

A. W. HARRISON, M. B. MAY.

